Question

explain the eye lens


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Answer 1

Answer:

The Cornea

The cornea is a transparent dome-shaped tissue that forms the front part of your eye.

It functions as a window and allows light to enter your eye. It also begins the process of focusing light rays that allow you to see words and images clearly. The cornea provides 65-75% of your eye's focusing power.

The cornea does not contain any blood vessels, but instead contains many nerve endings that make it extremely sensitive. That is why a scratch or a loose eyelash is so painful.

Aqueous Humor

Aqueous humor is a clear, watery fluid, contained in two chambers behind the cornea, that helps to bring nutrients to the eye tissues. It is produced by the ciliary body, a ring of tissue that sits behind the iris.

As it circulates, the aqueous fluid flows to the front part of the eye, where it is drained by the trabecular meshwork, a sponge-like filtering system located where the cornea and iris meet. After draining through the trabecular meshwork, the aqueous fluid then passes through a small duct, called the canal of Schlemm, and is absorbed into the bloodstream.

The health of your eye depends upon a continuous process of production, flow, and drainage of this aqueous fluid. Any interruption of this process can lead to problems with increased pressure inside the eye, such as glaucoma.

The Sclera

The sclera is a tough white outer coating of fibrous tissue that covers your entire eyeball (all the way around) except for the cornea. The muscles that move the eye are attached to the sclera. The name sclera comes from the Greek word "skleros," which means "hard."

The Iris and the Pupil

The iris is a ring-shaped membrane inside the eye that surrounds an opening in the center, called the pupil. The iris contains muscles that allow the pupil to become larger (open up or dilate) and smaller (close up or constrict). The iris regulates the amount of light that enters your eye by adjusting the size of the pupil opening.

In bright light, the iris closes (or constricts) and makes the pupil opening smaller to restrict the amount of light that enters your eye.

hope it helps you

MARK ANSWER AS BRAINLIEST